Home / 7,426.50-11,139.77-2,809.50

Finding the Fourth Proportional to 7,426.50, 11,139.77 and 2,809.50

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Solution

The fourth proportional to 7,426.50, 11,139.77 and 2,809.50 is: 4,214.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,426.50 : 11,139.77 = 2,809.50 : x
  2. Step 2: Convert to fraction form
    7,426.50/11,139.77 = 2,809.50/x
  3. Step 3: Cross multiply
    7,426.50x = 11,139.77 × 2,809.50
  4. Step 4: Simplify right side
    7,426.50x = 31,297,190.84
  5. Step 5: Solve for x
    x = 31,297,190.84/7,426.50
  6. Step 6: Final answer
    x = 4,214.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.